when i was younger i made a few box traps out of wood and wire fencing ..... used nylon line and filed down nails for the trigger mechanism ..... and wire fencing for the back of the trap ...that way when the door was open (trap set) the wind could pass thru the trap to spread the scent ..... they worked ok ....but would be better if ya spent a few bucks and got ya sum good traps ...... they will more than pay for themselves